Exquisite and professional workmanship ensures durability and sturdiness. Multiple power output options allow selection based on various work requirements. The strong light source with high penetrating power enables effective transmission through fiber up to 10 km. The rotatable protective cover helps shield the switch. Constructed from aluminum alloy material for long-lasting use. Product dimensions: 17.5 cm in length and 2.4 cm in width. Compatible with SM/MM optical fiber. Useful for fiber fault detection, connector inspection, and similar applications. Item Name: Probe Pen Material: Aluminum Alloy Applicable Fiber: SM/MM Output Wavelength: 65010 nm Output Optical Power: 1/10/20/30 mW Battery Type: 2 x AA Batteries (Not Included) Features: Strong Light Source, Fine Workmanship, Non-slip Working Temperature: 0C to 60C Storage Temperature: -20C to 70C Size Details: Size: 17.5 cm x 2.4 cm / 6.89" x 0.94" (Approx.) Notes: Due to lighting and screen setting differences, the item's color may vary slightly from the images. Please allow slight dimensional variations due to manual measurement. Package Includes: 1 x Probe Pen